Piston-rod-removing device.



1. L. MALONE. l PISTON ROD REMQVING DEVICE. APPLICATION 4HLII? MAR'. 25| 1918- Paftented Sept. 3, 19181 s SHEETS-SHEET 1.

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Mmmm@- Patentd sept. 3,1918. 3 SHEETS-SHEET 3v 1 L MALQNE PI-STON ROD REMQVING DEVICE.

APPLICATN FILED MAR. 25. |918.

\\\V T A O0 l y @j a f j 7 f y f 72% x Cri J CHN Il. MALONE, OF WHISTLER, LABAMA.

PISTON-RD-REMOVING- DEVICE.

Specification of Letters Patent.`

i Patented Sept. 51. 'Qllt.

Application filed March 25, 1918. Serial No. 224,624.

To all whom it may concern.'

Be it known that l, Jona la. hlALoNn, a citizen ot the llnited States, residingr at Whistler, in the county et Mobile and Slate of Alabama, have invented certain new and useful lmproveniente in PietonRod-Removing Devices; and, l do declare the following to be a full, clear, and exact description ci the invention, auch as .will enable othcra` skilled in tl i art to which is appertains to make and use the same.

My invention has 'for its object to provide a comparatirely simple yet a highly eflirient and durable device Jr'ol' removing piston rodeI trom cross heads by `the action ol' a hydraulic ram` In the construction ol" the device, a body i. provided l'or reception in the cross head`l laid body having' an oil reservoir, a hydraulic ram, and a. plunger lor t'orcingoil from the reservoir to operate the ram, the latter engaging the piston rod. A further objet-i is to provide the al'oresaid body with novel allotments for reception in the wrist, pin openings ot' the croa'a head to anchor Said body.

With the foregoing general objects in view, the invention resides in tbe novel fea lures ot' construction and unique combinations olI parte to be hereinafter fully described and claimed, the descriptive matter being; supplemented by the act-empanyinhr drawings which `torni a part olf thitI specilition and in which:

Figure l is a side, elevation ot' the invention showing' its ai'iplication in removing a piston rod Jfrom a cross head;

Fig. Q is an edge view oi the device in use;

Fila'. il is an enlarged substaiuially centrallongitudinal section;

Fig. 4 is. a Similar vien' showing' the device inverted Vtor returning the oil "trom tbe hydraulic ram into the reservoir:

Figs. 5, 6 a-nd 7 are horizontal sections on the planen of the lines4 5-5, Gmo and 7 7 respectively ot Fig. irl;

Fig. S in a duplicate ot Fig. 7 withthe exception that it Shows the abntinents extended "rather than retracted;

Fig. 9 is a perspective View showing the "ingly shaped.

outer construction of one of the abutment Sectione; and

Fig'. l() is a similar view illustrating the inner construction.

ln the drawings above briefly described, the numeral l deeignatcs an elongated metal body preferably ol ,fsul'intantially cylindrical .shape with its center enlarged vided with flat Sides. @ne lorins a hydraulic cylinder hydraulic ram or plug' l suitable packing' moana the inner end ot said ram or the like lo prevent the leakage oit' liuid, By the means yet to be described, die rain rn'ojected against the piston rod it atter the body l. has been ain-bored in the iti-osa head C. For so anchoring the body l., the latter is pro vided on its opposite sides with abntments A adapted lfor reception in the usual Wrist,

end of body l in which a is slidably received,

pin openings t) oi' the cross head (il, 'each ot the abutmente A beiner varialiile in size according' to `the diameter of the openings 0; a nd since these openings are in moet cases tapered. the abnlnieuts will be` correspond As chown, the abutments are each formed ottvfo sections 6 movable toward and away trom each other to vary the size ot' said abutments. Isaid sections be ing' ol" arcuate shape and receivable in arenate sockets; J 'formed in the oiiposite sides of the body 1 The ends oll the sockets 6" are by pre'lrcnce increased in depth as Shown at 7 and the abutment sections G are provided with preterabl y triangular extensions S receivable in said deepened ends. This at and pro-` being carried arrangement imparts more rigidity to the abutments as will be obviouaf The Sockets (3 are ol' euch size as to permit the abutment sect ions l5 to be totally received. therein when applying' and removing' the body l, but

lwhen said body is in place, the sections in question are withdrawn and positioned in the opening (l as shown moet clearly in Fig: 2. To limit the outward movement of the abutmente, transverse tie bolts 9 are provided, and in order that these bolts may not interfere with the movement et' the sections" (i toward and away from each other, the body l is formed with arcuate slots 10 through which the bolts extend.

The end of the body 1 remote from the cylinder 3 is formed with an oil reservoir l1 having; illing opening l2 normally closed by a vented plug 13 which will permit the escape oi any air from the reser- `voir without allowing thc oil to leak therefrom. A central cylindrical bore 14 leads from the reservoir 11 into the cylinder il, the end of said bore adjacent the cylinder being counterbored and threaded at 15 to receive a plug 16 in which a check valve17 is mounted to prevent the passage of oil from the cylinder 3 after it is once forced into the latter, said valve spring 18 and having a spider-like stein 19 which extends beyond the inner end of the plug 16 for a purpose to appeal'. il plunger 20 1s provided to force the oil from reservoir l1 into cylinder 3 in order to project the ram 4l., said plunger having a suitably packed piston 21 on its inner end received. slidably in the bore 14. This piston is provided with ports 22 which, upon each receding stroke of the piston, 'permit oil to enter the aforesaid bore 14 in advance of the piston, these ports however being closed on the proceeding strokes of the piston by avspring* closed check valve 23 having a spider-like stem 24 slidable in the innerend of Ythe plunger 20. A,

The intermediate portion of the plun er 20 slides Vthrough an appropriatestu ng box 25 and projects through a hollowA head 26 which is swiveled at 27 to the end of the body 1 opposite the rain 4. rlhe outer end of head 2G is provided with a guide 26 through which the outer end of plunger 2l slides, said plunger having an external cylirider 2S adapted to strike the inner end of said guideto limit the receding movement of said plunger. An operating lever 29 extends through a slot 30 in one side of the head 2G and is provided with furcations 3lon its inner end receivable in notches 32 in the opposite sides of the plunger 20, whereby oscillation of said lever will reciprocate the plunger, thus forcing,l oil form the reservoir 11 into the cylinder 3g and projecting the ram 4 to remove the piston rod R. Since the head 2G is swiveled to the body l and lever 29 is ulcrumed to said head, this lever may be swung around into the most convenient relation with the device. To limit the proceedingl movement of the plunger, a stop 33 preferably in the iorm of a set screw, is provided in the path of lever 29 as shown clearly in Fig. 3.

After operation oi' the device, it is necessary to return the oil or other fluid used from the cylinder' 3 to the reservoir 1l. ln order to accomplish this, it is necessary to withdraw the stop 33 sufficiently to permit an excessive proceeding movement of the piston 21, with the result that this piston will strike the stem 19 and open the check being closed by a.4

- abutments being each loit sections mumble toward and away from valve l? (see Fig. At the same time, it is necessary to open thc valve 23 and in prdcr to obtain this end, a stem 3l ishoused 1n the plunger 20, the inner end of said stem being' arranged to strike the stern 2l of said valve 23 while thc outer end ol' said stem 31 is provided with a plugr or head 35 threaded into a. socket 3G in the outer end of the plunger. When this plugr or head is so turned as to force the stenrlsl inwardly as shown in Fig. 4, the valve 23 will be held in open position. Then, by inverting the entire device (see again Fig. if) the o1l will flow from the cylinder 3 baclrvinto the reservoir 11.

1n operation, the body 1 is inserted in the cross bead while the abutnieritsA are in retracted position, said abutlnents being then withdrawn and suitably adjusted to adapt them to the size of the wrist pin openings 0. This having been done, the lever 29 is oscillated so that the plunger 20 forces oil. into the cylinder 3 to projeotthe hyd 'aulic ram 4 against the piston rod, thus forcing the latter from the opening in which it has been held. To remove the device, the abutments A are again forced into the sockets 6' and after such removal, the oil is returned to the reservoir 11 by inverting the device and opening the check valves in the manner above set forth.

From the foregoing, taken in connection with the accompanying drawing, it will be obvious that although my invention is of comparatively simple and inexpensive nature, it will be highlyv eilicient and reliable. Since probably the best results are obtained from the several details shown and de scribed, these `details are preferably ernployed, but within the scope of the inven- 'tion as claimed, considerable latitude is allowed .for development.

1 claim:

1. A device for removing` Jiston rods from cross heads comprising a ody receivable in the cross head, ram carried by said body to thrust against the piston rod, means `"for operatingr said rain, and abutmcnts extending from opposite sides of said.. body and receivable in the wrist pin openings of the cross head to anchor said body.

2. A structure as specified in claim 1, said abu'tments being retractable into said body for applying and removing' 'the latter.

3. A structure as speciiied in claim 1, said abutments beingl variable in size for reception in wrist pin openings of different diarneters.

4. A structure as specified in claim 1, said formed of aplurality said abutnieuts each other to vary the size of to the size of the wr1st pin openaccordingy ings.

5. A structure as specified in claim 1, said lll@ body having arcuate sockets in which said my hand in the presence of two subscribing abptments are slidabe and said abutmenvts Wltnesses. bemg each formed of n plurality of sections movable toward and away from each other Y JOHN L' MALONE 5 to vary the size of said abutmeuts uccord- Witnesses:

in? to the size 0f the wrist pin openings. MARY L. VINDLEY;

n testimony whereof I huvohereunto set J. IRWIN BURGE'IT. 

